D-value in the AIREP
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wingtip777
It appears your 'D-value' is the difference between the actual height of a pressure surface and its standard height.
From the forewords in ICAO Annex 3 and PANS-ATM, I gather the term 'D-value' was introduced in 1963 but soon deleted from the model AIREP form in 1965/6.
It appears your 'D-value' is the difference between the actual height of a pressure surface and its standard height.
From the forewords in ICAO Annex 3 and PANS-ATM, I gather the term 'D-value' was introduced in 1963 but soon deleted from the model AIREP form in 1965/6.
